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In this episode, the chefs get a visit from “Top Chef” alum Ed Lee, who owns restaurants in Louisville. Padma gives them a Quickfire puzzler. They have to solve a crazy Fort Knox-themed challenge to get some bouillon to cook for their Quickfire.

The winner will get “a major advantage” in the Elimination Challenge, Padma says.

We know from last week’s tease that they will break into teams for a “three on three” challenge at Rupp Arena, where Ed and Coach John Calipari are among the judges.

We also know there’s major drama between Kelsey and Sara over waffle mix. This looks like it could get really ugly.

Whoever packs their knives this week will be facing David on “Last Chance Kitchen,” where he defeated Brandon in a mystery ingredient cook-off.

David and Brandon are facing a table of “UFO”s: Unidentified food objects. They have to pick out a meat and two others and make a dish out of it.

Brandon ends up with artichokes, mangoes and a ground meat. David has scallops, roasted peppers and nuts, maybe? Turns out they are both wrong: Brandon has Spam and David has crumbled sugar cookies.

But what they turn out actually does pretty well, and Tom says he’s pretty happy with both dishes. David makes scallops with romesco, cauliflower puree and apples; Brandon makes mystery meat empanada, curry, mango puree and kale chimichurri.

It came down to who met the challenge better, Tom says, tipping it to David.